PDF malware analysis — malicious · b8fe52cda2c92412

MALICIOUS

PDF

41.8 KB Created: 2020-07-31 03:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 82c4eb600b52ff30c75b18e4398c7a6c SHA-1: 1e64363935999374ac01b589cc517fe8556ef0f5 SHA-256: b8fe52cda2c924123891ea82d697c08d6de5a902a3204e82bb5049ee2b5b611e

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ccna+book+pdf+bangla'. Additionally, it features a PDF link farm with numerous links, including one to 'https://cdn.shopify.com/s/files/1/0427/5788/2022/files/66303379498.pdf'. The document body, though heavily obfuscated, contains text related to 'Ccna book pdf bangla', suggesting a lure for users seeking specific content. The presence of a visual download button heuristic further supports the deceptive nature of the document.

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.ru/pify?keyword=ccna+book+pdf+bangla
- http://files.yourdfwattorney.com/uploads/1/3/0/7/130776206/menilukeriperipu.pdf
- http://files.blacklght.com/uploads/1/3/1/4/131406321/f6e8ac.pdf
- http://files.faithworks4u.com/uploads/1/3/1/1/131163684/peluvubop.pdf
- https://cdn.shopify.com/s/files/1/0427/5788/2022/files/66303379498.pdf
- https://cdn.shopify.com/s/files/1/0429/2512/9891/files/femoled.pdf
- https://cdn.shopify.com/s/files/1/0427/5847/1846/files/46552900387.pdf
- https://cdn.shopify.com/s/files/1/0429/2290/1663/files/dixadizixapebovuk.pdf
- https://cdn.shopify.com/s/files/1/0428/8954/3836/files/norufowomowad.pdf
- https://cdn.shopify.com/s/files/1/0437/1510/0826/files/66749259291.pdf
- https://cdn.shopify.com/s/files/1/0430/8421/8532/files/pegusukerowezijomepap.pdf
- https://cdn.shopify.com/s/files/1/0433/3459/8809/files/sudonikariwiwolapajerikuw.pdf
- https://cdn.shopify.com/s/files/1/0433/9197/5580/files/52865460903.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70686619693.pdf
- https://cdn.shopify.com/s/files/1/0427/7328/2983/files/vowobawezozos.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000065e9.bin` `b90f504421b6acaa3453193a548b6c6aff6a6a2e1b783bd2ece03def19c2c6db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65E9	4820 bytes
`font_01_sfnt_off00007652.bin` `570ab4af0d44692128b54a5ff403e7c485b007c36143a9defd378ebe8733f5b9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7652	10288 bytes

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